Sulfonic-functionalized heteropolyacid-silica nanoparticles for high temperature operation of a direct methanol fuel cell

Hyun Jong Kim; Yong Gun Shul; Haksoo Han

doi:10.1016/j.jpowsour.2005.10.001

Sulfonic-functionalized heteropolyacid-silica nanoparticles for high temperature operation of a direct methanol fuel cell

Hyun Jong Kim, Yong Gun Shul, Haksoo Han

Department of Chemical and Biomolecular Engineering

Research output: Contribution to journal › Article › peer-review

52 Citations (Scopus)

Abstract

Sulfonic-functionalized heteropolyacid-SiO₂ nanoparticles were synthesized by grafting and oxidizing of a thiol-silane compound onto the heteropolyacid-SiO₂ nanoparticle surface. The surface functionalization was confirmed by solid-state NMR spectroscopy. The composite membrane containing the sulfonic-functionalized heteropolyacid-SiO₂ nanoparticles was prepared by blending with Nafion^® ionomer. TG-DTA analysis showed that the composite membrane was thermally stable up to 290 °C. The DMFC performance of the composite membrane increased the operating temperature from 80 to 200 °C. The function of the sulfonic-functionalized heteropolyacid-SiO₂ nanoparticles was to provide a proton carrier and act as a water reservoir in the composite membrane at elevated temperature. The power density was 33 mW cm^-2 at 80 °C, 39 mW cm^-2 at 160 °C and 44 mW cm^-2 at 200 °C, respectively.

Original language	English
Pages (from-to)	137-142
Number of pages	6
Journal	Journal of Power Sources
Volume	158
Issue number	1
DOIs	https://doi.org/10.1016/j.jpowsour.2005.10.001
Publication status	Published - 2006 Jul 14

Bibliographical note

Funding Information:
This work was supported by Ministry of Science and Technology of Korea through the National Research Laboratory Program. And, authors also appreciate the financial support from Korea Research Foundation Grant (2005-005-J01402).

All Science Journal Classification (ASJC) codes

Renewable Energy, Sustainability and the Environment
Energy Engineering and Power Technology
Physical and Theoretical Chemistry
Electrical and Electronic Engineering

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jpowsour.2005.10.001

Cite this

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title = "Sulfonic-functionalized heteropolyacid-silica nanoparticles for high temperature operation of a direct methanol fuel cell",

abstract = "Sulfonic-functionalized heteropolyacid-SiO2 nanoparticles were synthesized by grafting and oxidizing of a thiol-silane compound onto the heteropolyacid-SiO2 nanoparticle surface. The surface functionalization was confirmed by solid-state NMR spectroscopy. The composite membrane containing the sulfonic-functionalized heteropolyacid-SiO2 nanoparticles was prepared by blending with Nafion{\textregistered} ionomer. TG-DTA analysis showed that the composite membrane was thermally stable up to 290 °C. The DMFC performance of the composite membrane increased the operating temperature from 80 to 200 °C. The function of the sulfonic-functionalized heteropolyacid-SiO2 nanoparticles was to provide a proton carrier and act as a water reservoir in the composite membrane at elevated temperature. The power density was 33 mW cm-2 at 80 °C, 39 mW cm-2 at 160 °C and 44 mW cm-2 at 200 °C, respectively.",

author = "Kim, {Hyun Jong} and Shul, {Yong Gun} and Haksoo Han",

note = "Funding Information: This work was supported by Ministry of Science and Technology of Korea through the National Research Laboratory Program. And, authors also appreciate the financial support from Korea Research Foundation Grant (2005-005-J01402).",

year = "2006",

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doi = "10.1016/j.jpowsour.2005.10.001",

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T1 - Sulfonic-functionalized heteropolyacid-silica nanoparticles for high temperature operation of a direct methanol fuel cell

AU - Kim, Hyun Jong

AU - Shul, Yong Gun

AU - Han, Haksoo

N1 - Funding Information: This work was supported by Ministry of Science and Technology of Korea through the National Research Laboratory Program. And, authors also appreciate the financial support from Korea Research Foundation Grant (2005-005-J01402).

PY - 2006/7/14

Y1 - 2006/7/14

N2 - Sulfonic-functionalized heteropolyacid-SiO2 nanoparticles were synthesized by grafting and oxidizing of a thiol-silane compound onto the heteropolyacid-SiO2 nanoparticle surface. The surface functionalization was confirmed by solid-state NMR spectroscopy. The composite membrane containing the sulfonic-functionalized heteropolyacid-SiO2 nanoparticles was prepared by blending with Nafion® ionomer. TG-DTA analysis showed that the composite membrane was thermally stable up to 290 °C. The DMFC performance of the composite membrane increased the operating temperature from 80 to 200 °C. The function of the sulfonic-functionalized heteropolyacid-SiO2 nanoparticles was to provide a proton carrier and act as a water reservoir in the composite membrane at elevated temperature. The power density was 33 mW cm-2 at 80 °C, 39 mW cm-2 at 160 °C and 44 mW cm-2 at 200 °C, respectively.

AB - Sulfonic-functionalized heteropolyacid-SiO2 nanoparticles were synthesized by grafting and oxidizing of a thiol-silane compound onto the heteropolyacid-SiO2 nanoparticle surface. The surface functionalization was confirmed by solid-state NMR spectroscopy. The composite membrane containing the sulfonic-functionalized heteropolyacid-SiO2 nanoparticles was prepared by blending with Nafion® ionomer. TG-DTA analysis showed that the composite membrane was thermally stable up to 290 °C. The DMFC performance of the composite membrane increased the operating temperature from 80 to 200 °C. The function of the sulfonic-functionalized heteropolyacid-SiO2 nanoparticles was to provide a proton carrier and act as a water reservoir in the composite membrane at elevated temperature. The power density was 33 mW cm-2 at 80 °C, 39 mW cm-2 at 160 °C and 44 mW cm-2 at 200 °C, respectively.

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DO - 10.1016/j.jpowsour.2005.10.001

M3 - Article

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SN - 0378-7753

VL - 158

SP - 137

EP - 142

JO - Journal of Power Sources

JF - Journal of Power Sources

IS - 1

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Sulfonic-functionalized heteropolyacid-silica nanoparticles for high temperature operation of a direct methanol fuel cell

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

UN SDGs

Access to Document

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